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Most likely, the body is producing urine at a faster rate because it is excited and all systems are working faster. Then, after ejaculation, the guy is relaxed and notices that he needs to pee, so he does. Some believe that peeing after sex helps both guys and girls avoid urinary tract infections by flushing irritants out of the urethra.

Most likely, the body is producing urine at a faster rate because it is excited and all systems are working faster. Then, after ejaculation, the guy is relaxed and notices that he needs to pee, so he does. Some believe that peeing after sex helps both guys and girls avoid urinary tract infections by flushing irritants out of the urethra.

This is not entirely true. Physiology isn't quite as simple. Sympathetic activation does increase blood pressure and contributes to a higher filtration rate in the glomerular apparatus of the kidneys, but volume of urine isn't the only factor for the one's urge to pee. This is why sometimes you feel the urge to go pee, but don't urinate a lot of volume.

While there are couple contributing factors, I think its because males often still have some semen in their penis that was not ejaculated. Once your erection goes away, the of presence of this fluid can trigger the perception that you need to pee, regardless of urine in your bladder. Other contributing factors could be due to hormonal changes after ejaculation or due to relaxation of muscular tension.

This is not entirely true. Physiology isn't quite as simple. Sympathetic activation does increase blood pressure and contributes to a higher filtration rate in the glomerular apparatus of the kidneys, but volume of urine isn't the only factor for the one's urge to pee. This is why sometimes you feel the urge to go pee, but don't urinate a lot of volume.

While there are couple contributing factors, I think its because males often still have some semen in their penis that was not ejaculated. Once your erection goes away, the of presence of this fluid can trigger the perception that you need to pee, regardless of urine in your bladder. Other contributing factors could be due to hormonal changes after ejaculation or due to relaxation of muscular tension.